Hoover Dam took 7 million tons of concrete to build, which was enough to pave a two-lane highway from California to New York. It was completed in 1935. How many pounds of concrete did it take?

2.

The Bowmans traveled from the capital of Nevada, Carson City, to Winnemucca. The trip was 180 miles. They stopped for lunch after traveling 2/3 the distance. How many miles did they travel before lunch?

3.

At Discount Grocery in Las Vegas, a gallon of whole milk will cost you $3.08. If you buy the gallon at Rich Grocery, it will cost $4.04. What is the price difference between the two stores?

4.

After being built for 20 years, the 165-mile Tahoe Rim Trail was finished in late 2001. About how many miles of the trail were built each year?